iOS 9.3 jailbreak has already been announced for release during the night, though iOS 9.3 is officially available for just a little more than 12 hours. A less known iOS hacker (@enMTW) claiming that will offer to public a free jailbreak solution for all Apple device running the latest iOS 9.3, NO iOS 9.2.1.
9.3 is ready to go, by the way. Waiting for the SE.
— enMTW (@enMTW) March 18, 2016
Needless to say that peoples are very optimistic. A few weeks ago, hacker @enMTW has demonstrated that it can exploit Apple’s latest beta operating system( 9.3 beta), so it is verry posible that he owns a jailbreak solution for the final version. However, the release will take place only after the new iPhone SE will be officially presented, so no earlier than March 31st.
Apart from this, there are various iOS hackers from all over the world working on a jailbreak solutions for iOS 9.3 (and as many are fake), but no one yet knows when or if they will be released for free to public.